R studio expected', 'after expression

On the R studio script, you must type in the line where you should type a comma, for example:
On the leftmost side of the line, a blank mark appears.
If you hover your cursor over this button, you will see "R studio expected', 'after expression'
The error appears.

 m<-rbind(
x Revenue
xexpenses
xprofit.1000
xprofit.margin
   　good.months
　 )

If you type a line-by-line comma, you won't get any errors, but you can put them all together on multiple lines. Is there no way to hit it?